Applet Maximum Argument Length

In case large or multiple documents are signed, you have to know, that arguments passed to the applet plugin have a length restriction.
The length restriction for the Java 7 plugin is approximately 10.5 MB for the sum of all arguments.

To work around this restriction try passing the arguments as (hidden) form fields.

For example instead of

ARGS: 'documents.0.content=...; documents.1.content=...';

Use form fields:

<form id="form">
  <input type="hidden" name="documents_0_content" value="..." />
  <input type="hidden" name="documents_1_content" value="..." />